CN104301979B

CN104301979B - A kind of method for controlling uplink transmission power of UE, device, UE and base station

Info

Publication number: CN104301979B
Application number: CN201310306810.5A
Authority: CN
Inventors: 张兴炜; 闫志宇
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-07-19
Filing date: 2013-07-19
Publication date: 2018-05-01
Anticipated expiration: 2033-07-19
Also published as: US9883512B2; EP3018947A4; ES2673107T3; EP3018947B1; US20160135193A1; EP3018947A1; CN104301979A; WO2015007151A1

Abstract

The embodiment of the invention discloses a kind of control method, device, UE and the base station of the uplink transmission power of UE, the described method includes：Determine subframe configuration information, the subframe configuration information is used to indicate the base station corresponding to each subframe in a radio frames；Determine the corresponding static power control parameter in each base station；Determine the TPC adjusted values of present sub-frame；The TPC adjusted values of static power control parameter and present sub-frame according to corresponding to the corresponding base station of present sub-frame determine the uplink transmission power of present sub-frame.The embodiment of the present invention can realize controls of the UE to uplink transmission power during different base station transmission data when UE is connected at least two base stations.

Description

Uplink transmission power control method and device for UE, UE and base station

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for controlling uplink transmit power of User Equipment (UE), the UE, and a base station.

Background

The 3 rd generation partnership project long term evolution-advanced (LTE-a) version 10/11/12 (Rel-10/11/12) is an enhancement to the 3 rd generation partnership project long term evolution-advanced (LTE) version 8/9 (Rel-8/9) technology, and LTE-a systems have higher bandwidth requirements than LTE systems, supporting peak data rates up to 1 Gbts/s. In order to meet the requirements of LTE-a, the LTE-a system uses a Carrier Aggregation (CA) technique as a method for expanding the system bandwidth, and largely adopts a Multiple-Input Multiple-Output (MIMO) enhancement technique and an adaptive technique to improve the data rate and the system performance.

In the LTE-a Rel-12 release, enhancements to hot spot areas are a hot topic. The hot spot area includes an indoor scene and an outdoor scene, and is covered by a plurality of low power micro base stations (Pico Evolved Node bs, Pico eNB) to form a Small Cell Network (SCN). An indoor micro base station supports only low-speed moving User Equipment (UE), and an outdoor micro base station supports low-speed moving UE and medium-speed moving UE. Neither micro base station supports high-speed moving UEs. Wherein, generally, the UE moves at a low speed when the moving speed of the UE is 0-15km/h, the UE moves at a medium speed when the moving speed of the UE is 15-60km/h, and the UE moves at a high speed when the moving speed of the UE is more than 60 km/h. Because the micro base station only serves the UE moving at medium and low speeds, the quality of a wireless channel between the micro base station and the UE is relatively good, and the expenses of pilot frequency and control signaling can be reduced; in addition, the coverage area of the micro base station is smaller than that of a Macro base station (Macro Evolved Node B, Macro eNB), and the number of served UEs is smaller than that of the Macro base station.

In LTE-a Rel-12, a Small Cell Enhancement word Item (SCE WI) introduces a dual-connection feature, that is, one UE may be connected to at least two base stations at the same time, for example, a macro base station and a micro base station, and the macro base station and the micro base station may be in the same frequency or in different frequencies. Due to the small coverage of the micro base stations, if the UE moves faster, it is easy to frequently enter the coverage of another micro base station from the coverage of one micro base station, resulting in frequent base station handover. The dual connection can enable the UE to be simultaneously connected with the macro base station and the micro base station, the macro base station provides services for the UE for the content and real-time services related to mobility management such as Voice over Internet Protocol (VoIP), and the micro base station only provides data services for the UE.

When the UE is connected to at least two base stations, if the UE uplink has only single-chain transmission capability, different data cannot be simultaneously sent to the macro base station and the micro base station, respectively. For such a UE, a Time Division Multiplexing (TDM) method may be adopted to transmit data to different base stations at different times. However, since the difference between the uplink transmission power required for transmitting data to the micro base station and the uplink transmission power required for transmitting data to the macro base station is large, how to implement the uplink transmission power control of the UE under the dual connectivity is not disclosed in the prior art.

Disclosure of Invention

The embodiment of the invention provides a method and a device for controlling uplink transmitting power of UE (user equipment), the UE and a base station, which can realize the control of the uplink transmitting power when the UE sends data to different base stations when the UE is connected to at least two base stations.

In a first aspect, an embodiment of the present invention provides a method for controlling uplink transmit power of user equipment UE, where the UE is connected to at least two base stations; the method further comprises the following steps:

determining subframe configuration information, wherein the subframe configuration information is used for indicating a base station corresponding to each subframe in a wireless frame; determining static power control parameters corresponding to each base station;

determining a Transmission Power Control (TPC) adjustment value of a current subframe;

and determining the uplink transmitting power of the current subframe according to the static power control parameter corresponding to the base station corresponding to the current subframe and the TPC adjusting value of the current subframe.

With reference to the first aspect, in a first possible implementation manner of the first aspect, determining the uplink transmission power of the current subframe according to the static power control parameter corresponding to the base station corresponding to the current subframe and the TPC adjustment value of the current subframe includes:

determining a power offset value of the current subframe according to the TPC adjustment value of the current subframe;

and determining the uplink transmitting power of the current subframe according to the static power control parameter corresponding to the base station corresponding to the current subframe and the power offset value of the current subframe.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the TPC adjustment value is a TPC cumulative value; determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe includes:

determining a power offset value of the current subframe according to the offset value of the previous subframe of the current subframe and the TPC accumulated value of the current subframe;

when the current subframe and the previous subframe of the current subframe correspond to different base stations, the value range of the TPC accumulated value of the current subframe is larger than the value range of the TPC accumulated value of the current subframe when the current subframe and the previous subframe correspond to the same base station.

With reference to the first possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the TPC adjustment value is a TPC cumulative value; determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe includes:

when the current subframe corresponds to a different base station from the subframe before the current subframe, determining the power offset value of the current subframe according to the power offset value of the subframe before the current subframe, the TPC accumulated value of the current subframe and a preset first static adjustment value;

and when the current subframe corresponds to the same base station as the subframe before the current subframe, determining the power offset value of the current subframe according to the power offset value of the subframe before the current subframe and the TPC accumulated value of the current subframe.

With reference to the first possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the TPC adjustment value is a TPC cumulative value; determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe includes:

when the current subframe corresponds to a different base station from the subframe before the current subframe, determining the power offset value of the current subframe according to the power offset value of the subframe of the same base station corresponding to the subframe before the current subframe and the TPC accumulated value of the current subframe;

when the current subframe corresponds to the same base station as the previous subframe of the current subframe, determining the power offset value of the current subframe according to the power offset value of the previous subframe of the current subframe and the TPC accumulated value of the current subframe;

With reference to the first possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the TPC adjustment value is a TPC cumulative value; determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe includes:

when the current subframe corresponds to a different base station from the subframe before the current subframe, determining the power offset value of the current subframe according to the power offset value of the subframe which corresponds to the same base station from the subframe before the current subframe and the current subframe, the TPC accumulated value of the current subframe and a preset second static adjustment value;

With reference to the first possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the TPC adjustment value is a TPC cumulative value; determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe includes:

when the current subframe and the previous subframe of the current subframe correspond to different base stations, determining the TPC accumulated value of the current subframe as the power offset value of the current subframe;

With reference to the first possible implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, the TPC adjustment value is a TPC absolute value; determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe includes:

and determining the TPC absolute value of the current subframe as the power offset value of the current subframe.

With reference to the first possible implementation manner of the first aspect, in an eighth possible implementation manner of the first aspect, when a current subframe and a subframe before the current subframe correspond to different base stations, the TPC adjustment value is a TPC absolute value; when the current subframe corresponds to the same base station as the previous subframe of the current subframe, the TPC adjustment value is a TPC accumulated value; determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe includes:

when the current subframe and the previous subframe of the current subframe correspond to different base stations, determining the TPC absolute value of the current subframe as the power offset value of the current subframe;

when the current subframe corresponds to the same base station as the previous subframe of the current subframe and the TPC adjustment value of the previous subframe of the current subframe is the TPC absolute value, determining the TPC accumulated value of the current subframe as the power deviation value of the current subframe;

and when the current subframe corresponds to the same base station as the previous subframe of the current subframe and the TPC adjustment value of the previous subframe of the current subframe is the TPC accumulated value, determining the power offset value of the current subframe according to the power offset value of the previous subframe of the current subframe and the TPC accumulated value of the current subframe.

With reference to the first possible implementation manner of the first aspect, and/or the second possible implementation manner of the first aspect, and/or the third possible implementation manner of the first aspect, and/or the fourth possible implementation manner of the first aspect, and/or the fifth possible implementation manner of the first aspect, and/or the sixth possible implementation manner of the first aspect, and/or the seventh possible implementation manner of the first aspect, and/or the eighth possible implementation manner of the first aspect, in a ninth possible implementation manner of the first aspect, the static power control parameters corresponding to different base stations are the same or different.

In a second aspect, an embodiment of the present invention provides an uplink transmission power control apparatus for a user equipment UE, where the UE is connected to at least two base stations; the device also includes:

an information determining unit, configured to determine subframe configuration information, where the subframe configuration information is used to indicate a base station corresponding to each subframe in a radio frame;

a first determining unit, configured to determine a static power control parameter corresponding to each base station;

a second determining unit, configured to determine a TPC adjustment value for controlling transmit power of a current subframe;

and a third determining unit, configured to determine, according to the subframe configuration information determined by the information determining unit and the static power control parameter corresponding to each base station determined by the first determining unit, a static power control parameter corresponding to the base station corresponding to the current subframe, and determine, according to the static power control parameter corresponding to the base station corresponding to the current subframe and the TPC adjustment value of the current subframe determined by the second determining unit, the uplink transmit power of the current subframe.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the third determining unit includes:

a first determining subunit, configured to determine a power offset value of the current subframe according to the TPC adjustment value of the current subframe;

and the second determining subunit is configured to determine, according to the subframe configuration information determined by the information determining unit and the static power control parameter corresponding to each base station determined by the first determining unit, a static power control parameter corresponding to the base station corresponding to the current subframe, and determine, according to the static power control parameter corresponding to the base station corresponding to the current subframe and the power offset value of the current subframe, the uplink transmission power of the current subframe.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the TPC adjustment value is a TPC cumulative value; the first determining subunit is specifically configured to:

determining the power offset value of the current subframe according to the power offset value of the subframe before the current subframe and the TPC accumulated value of the current subframe;

With reference to the first possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the TPC adjustment value is a TPC cumulative value; the first determining subunit is specifically configured to:

With reference to the first possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the TPC adjustment value is a TPC cumulative value; the first determining subunit is specifically configured to:

With reference to the first possible implementation manner of the second aspect, in a fifth possible implementation manner of the second aspect, the TPC adjustment value is a TPC cumulative value; the first determining subunit is specifically configured to:

With reference to the first possible implementation manner of the second aspect, in a sixth possible implementation manner of the second aspect, the TPC adjustment value is a TPC cumulative value; the first determining subunit is specifically configured to:

With reference to the first possible implementation manner of the second aspect, in a seventh possible implementation manner of the second aspect, the TPC adjustment value is a TPC absolute value; the first determining subunit is specifically configured to:

With reference to the first possible implementation manner of the second aspect, in an eighth possible implementation manner of the second aspect, when a current subframe and a subframe before the current subframe correspond to different base stations, the TPC adjustment value is a TPC absolute value; when the current subframe corresponds to the same base station as the previous subframe of the current subframe, the TPC adjustment value is a TPC accumulated value; the first determining subunit is specifically configured to:

With reference to the foregoing first possible implementation manner of the second aspect, and/or the second possible implementation manner of the second aspect, and/or the third possible implementation manner of the second aspect, and/or the fourth possible implementation manner of the second aspect, and/or the fifth possible implementation manner of the second aspect, and/or the sixth possible implementation manner of the second aspect, and/or the seventh possible implementation manner of the second aspect, and/or the eighth possible implementation manner of the second aspect, in a ninth possible implementation manner of the second aspect, the static power control parameters corresponding to different base stations are the same or different.

In a third aspect, an embodiment of the present invention provides a user equipment UE, where the UE is connected to at least two base stations; the UE includes:

the device comprises a processor and a control unit, wherein the processor is used for determining subframe configuration information which is used for indicating a base station corresponding to each subframe in a wireless frame; determining static power control parameters corresponding to each base station; determining a Transmission Power Control (TPC) adjustment value of a current subframe; and determining the uplink transmitting power of the current subframe according to the static power control parameter corresponding to the base station corresponding to the current subframe and the TPC adjusting value of the current subframe.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the processor is specifically configured to: determining a power offset value of the current subframe according to the TPC adjustment value of the current subframe; and determining the uplink transmitting power of the current subframe according to the static power control parameter corresponding to the base station corresponding to the current subframe and the power offset value of the current subframe.

With reference to the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the TPC adjustment value is a TPC cumulative value; the processor is specifically configured to:

With reference to the first possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the TPC adjustment value is a TPC cumulative value; the processor is specifically configured to:

With reference to the first possible implementation manner of the third aspect, in a fourth possible implementation manner of the third aspect, the TPC adjustment value is a TPC cumulative value; the processor is specifically configured to:

With reference to the first possible implementation manner of the third aspect, in a fifth possible implementation manner of the third aspect, the TPC adjustment value is a TPC cumulative value; the processor is specifically configured to:

With reference to the first possible implementation manner of the third aspect, in a sixth possible implementation manner of the third aspect, the TPC adjustment value is a TPC cumulative value; the processor is specifically configured to:

With reference to the first possible implementation manner of the third aspect, in a seventh possible implementation manner of the third aspect, the TPC adjustment value is a TPC absolute value; the processor is specifically configured to:

With reference to the first possible implementation manner of the third aspect, in an eighth possible implementation manner of the third aspect, when a current subframe and a subframe before the current subframe correspond to different base stations, the TPC adjustment value is a TPC absolute value; when the current subframe corresponds to the same base station as the previous subframe of the current subframe, the TPC adjustment value is a TPC accumulated value; the processor is specifically configured to:

In a fourth aspect, an embodiment of the present invention provides a method for controlling uplink transmit power of a user equipment UE, where the UE is connected to at least two base stations, and the method further includes:

sending subframe configuration information to UE, wherein the subframe configuration information is used for indicating a base station corresponding to each subframe in a wireless frame;

sending static power control parameters of a base station to the UE; the base station is one of the at least two base stations;

sending a Transmit Power Control (TPC) adjustment value of a current subframe to the UE so that the UE can determine the uplink transmit power of the current subframe according to the static power control parameter and the TPC adjustment value; the current subframe is a subframe corresponding to the base station in subframes of the UE.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the method further includes:

and sending the static power control parameters of other base stations connected with the UE except the base station to the UE.

In a fifth aspect, an embodiment of the present invention provides an uplink transmit power control apparatus for a user equipment UE, where the UE is connected to at least two base stations; the device includes:

a sending unit, configured to send subframe configuration information to a UE, where the subframe configuration information is used to indicate a base station corresponding to each subframe in a radio frame; sending static power control parameters of a base station to the UE; the base station is one of the at least two base stations; the UE is also used for sending a Transmit Power Control (TPC) adjustment value of the current subframe to the UE so that the UE can determine the uplink transmit power of the current subframe according to the static power control parameter and the TPC adjustment value; the current subframe is a subframe corresponding to the base station in subframes of the UE.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the sending unit is further configured to: and sending the static power control parameters of other base stations connected with the UE except the base station to the UE.

In a sixth aspect, an embodiment of the present invention provides a base station, including:

the system comprises a transceiver and a base station, wherein the transceiver is used for sending subframe configuration information to UE, and the subframe configuration information is used for indicating a base station corresponding to each subframe in a wireless frame; sending static power control parameters of a base station to the UE; the UE is also used for sending a Transmit Power Control (TPC) adjustment value of the current subframe to the UE so that the UE can determine the uplink transmit power of the current subframe according to the static power control parameter and the TPC adjustment value; the current subframe is a subframe corresponding to the base station in subframes of the UE.

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the transceiver is further configured to: and sending the static power control parameters of other base stations connected with the UE except the base station to the UE.

In this embodiment, subframe configuration information is determined, where the subframe configuration information is used to indicate a base station corresponding to each subframe in a radio frame; determining static power control parameters corresponding to each base station; determining a TPC adjustment value of a current subframe; and determining the uplink transmitting power of the current subframe according to the static power control parameter corresponding to the base station corresponding to the current subframe and the TPC adjusting value of the current subframe. Therefore, the uplink transmitting power of the UE in each subframe can be determined, and each subframe corresponds to different base stations, so that when the UE is connected to at least two base stations, the control of the uplink transmitting power when the UE sends data to different base stations is realized.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a view of a scenario structure of a UE under dual connectivity;

FIG. 2 is an exemplary diagram of a subframe and a base station;

FIG. 3 is a diagram of a first embodiment of a method for controlling uplink transmit power of a UE according to the present invention;

FIG. 4 is a diagram of a second embodiment of a method for controlling uplink transmit power of a UE according to the present invention;

FIG. 5 is a diagram of a third embodiment of a method for controlling uplink transmit power of a UE according to the present invention;

FIG. 6 is a schematic diagram of an uplink transmit power control apparatus of a UE according to an embodiment of the present invention;

FIG. 7 is a diagram of another embodiment of an uplink transmit power control apparatus for a UE according to the present invention;

FIG. 8 is a schematic diagram of a UE according to the present invention;

fig. 9 is a schematic diagram of a base station structure according to the present invention.

Detailed Description

In the LTE-a Rel-12 release, the SCE WI introduces a dual connectivity feature, i.e. one UE may be connected to at least two base stations at the same time, for example, a macro base station and a micro base station, which may be the same frequency or different frequencies. Since the coverage of the micro base stations is small, if the UE moves at a fast rate, it is easy to frequently enter the coverage of another micro base station from the coverage of one micro base station, resulting in frequent handover. The dual connection can enable the UE to be simultaneously connected with the macro base station and the micro base station, the macro base station provides services for the UE for the content and real-time services related to mobility management such as Voice over Internet Protocol (VoIP), and the micro base station only provides data services for the UE.

The micro base station is a relatively independent small base station, only the coverage area of the small base station is smaller than that of the macro base station, the backhaul (backhaul) connection between the micro base station and the macro base station is not ideal, and the time delay can reach 5ms to 60 ms. If the UE is connected to the micro base station and the macro base station at the same time, when the UE feeds back Uplink data, such as Uplink Control Information (UCI), to the micro base station and the macro base station, due to the influence of a non-ideal backhaul between the micro base station and the macro base station, Information transmission delay between the micro base station and the macro base station is large, and real-time performance is poor, so that the UE cannot feed back the Uplink data to one base station of the micro base station and the macro base station, and then the base station forwards the Uplink data to the other base station. Thus, a more likely implementation is that the UE sends UCI to the macro base station and the micro base station, respectively, as shown in fig. 1. The UCI specifically includes a Scheduling Request (SR), an Acknowledgement/Negative Acknowledgement (a/N), Channel State Information (CSI), and the like, where the CSI includes a Channel Quality Information (CQI) signal, a Precoding Matrix Indication (PMI) signal, a Precoding Type Indication (PTI) signal, a Rank Indication (RI) signal, and the like.

However, for a UE with uplink having only single-chain transmission capability, different uplink data cannot be simultaneously transmitted to the macro base station and the micro base station. For such a UE, data may be sent to different base stations at different times by using a TDM method. For example, as shown in fig. 2, a base station corresponding to each subframe in a radio frame may be set, for example, subframes 0, 1, 2, 6, and 7 shown in fig. 2 correspond to micro base stations, and subframes 3, 4, 5, 8, and 9 correspond to macro base stations, and uplink data may be sent to the base station corresponding to the subframe in each subframe.

However, the difference between the uplink transmission power required for transmitting data to the micro base station and the uplink transmission power required for transmitting data to the macro base station is large, and the process of controlling the uplink transmission power of the UE in each subframe is complicated.

Therefore, the embodiments of the present invention provide a method and an apparatus for controlling uplink transmit power of a UE, the UE, and a base station, which can implement control of uplink transmit power when the UE sends data to different base stations when the UE is connected to at least two base stations.

First, uplink transmission power control of the UE in LTE-a is described as follows:

the uplink transmission power control of the UE in LTE-a may adopt a combination of open-loop and closed-loop control. The open loop transmit power control includes both static and dynamic power control, while the closed loop transmit power control includes only dynamic power control. The static power control described in the present invention includes static power control parameters that are not changed, and also includes semi-static power control parameters that are not changed within a certain time, and a network side device such as a base station configures semi-static power control parameters for the UE, and the semi-static power control parameters remain unchanged within a certain time, so that the accuracy of the transmission power control is low. On the basis of the open-loop transmission power control, the network side equipment can send a power control command TPC to the UE according to the feedback information of the UE, and dynamically adjusts the offset of the uplink transmission power of the UE, thereby realizing the closed-loop power control of the uplink transmission power. The uplink transmitting power control is carried out in a mode of combining the open-loop control and the closed-loop control, so that the transmitting power can be controlled more accurately.

In LTE-a, a Physical Uplink Control Channel (PUCCH) and a Physical Uplink Shared Channel (PUSCH) both have an explicit Uplink transmit power Control formula, and an Uplink transmit power Control formula for Sounding Reference Signal (SRS) is to add an offset to the transmit power of the PUSCH. In particular, the method comprises the following steps of,

the uplink transmission power control formula of the PUCCH is as follows:

P_PUCCH(i)＝min{P_CMAX,P_{0_PUCCH}+PL+h(n_CQI,n_HARQ)+Δ_{F_PUCCH}(F)+g(i)} [dBm]（1）

wherein,indicating a transmission power offset value of an ith uplink subframe;represents a Transmission Power Control (TPC) accumulated value of the ith uplink subframe relative to the (i-1) th uplink subframe; delta_PUCCHThe closed loop correction coefficient indicated by the TPC power control command in the downlink scheduling signaling DCI Format1/1A/1B/1D/2/2A/2B or DCI Format3/3A is represented; p_CMAXRepresents the maximum transmit power; p_{0_PUCCH}Representing power compensation due to the number of signaling bits; delta_{F_PUCCH}(F) Representing different PUCCH latticesPower regulation by formula (la); h (n)_CQI,n_HARQ) The number of bits indicates Uplink Control Information (UCI). In Frequency Division Duplex (FDD) mode, M =1, k0= 4; in Time Division Duplex (TDD) mode, the values of M and km are shown in table 1 below.

TABLE 1 values of M and km { k in TDD mode₀,k₁,…k_M-1}

The uplink transmission power control formula of the PUSCH is divided into two cases:

the first condition is as follows: if a subframe i only has a PUSCH or is not configured to have simultaneous transmission of the PUCCH and the PUSCH, and if a control signaling exists at the moment, the control signaling is sent to the PUSCH along with data, the uplink transmission power control formula of the PUSCH is as follows:

case two: if a subframe i is configured to be simultaneously transmitted by a PUCCH and a PUSCH, and the uplink transmission power of the PUCCH needs to be calculated according to the formula (1), the uplink transmission power control formula of the PUSCH is as follows:

wherein f is_c(i) Represents a power offset value of the ith uplink subframe, f_c(i) There are two calculation methods, which are: f. of_c(i)＝f_c(i-1)+δ_PUSCH,c(i-K_PUSCH) Or f_c(i)＝δ_PUSCH,c(i-K_PUSCH)，f_c(i)＝f_c(i-1)+δ_PUSCH,c(i-K_PUSCH) Is formed by the i-1 th uplink sub-unitPerforming TPC accumulation on a frame basis to obtain a power offset value, which belongs to the accumulated TPC, and f_c(i)＝δ_PUSCH,c(i-K_PUSCH) An absolute power offset value belonging to the absolute TPC; p_CMAX,c(i) Representing the maximum transmission power of the ith subframe under the c carrier;represents P_CMAX,c(i) A linear value of (d);represents P_PUCCH(i) A linear value of (d); m_PUSCH,c(i) Representing the number of RBs occupied by PUSCH; p_{O_PUSCH,c}(j) represents PUSCH reference power, [ alpha ]_c(j) Represents a path loss compensation factor; delta_TF,c(i) Indicating power adjustments due to different transport formats; PL_cRepresents the path loss of the c-carrier. For the accumulated TPC, the ith subframe has a TPC accumulated value delta relative to the (i-1) th subframe_PUSCH,c(i-K_PUSCH)，δ_PUSCH,cAnd the closed loop correction coefficient indicated by the TPC power control command in the uplink scheduling signaling DCI Format0/4 or DCI Format 3/3A. In FDD mode, K_PUSCH= 4; in TDD mode, K_PUSCHThe values of (A) are shown in Table 2 below.

TABLE 2 TDD mode K_PUSCHValue taking

Based on the uplink transmission power control formulas of the PUCCH and the PUSCH, the TPC command is divided into an accumulated TPC and an absolute TPC, the absolute TPC is only used for the PUSCH, and the switching between the two modes of the PUSCH is configured for each UE semi-statically through RRC signaling. In the accumulated TPC, the eNB instructs the UE to make further adjustments based on the last transmit power through TPC commands, and increases one power step relative to the previous power level, where the step value may be { -1, +1} dB (carried by DCI Format 3A) or { -1, 0, 1, 3} dB (carried by DCI Format 0/1/1A/1B/1D/2/2A/2B/3/4), and the accumulated TPC is not restricted with respect to which range the semi-static operating point is adjusted. In absolute TPC, the eNB controls the transmit power of the UE by TPC commands to independently add a power compensation signal relative to the semi-static operating point, the compensation set is { -4, -1,1,4} dB (carried by DCI Format 0/3/4), and the transmit power setting of absolute TPC is independent of the sequence of previously received TPC commands and is only related to the most recently received absolute TPC command.

For accumulated TPC, if the UE has reached maximum transmit power, the positive power control commands are not accumulated; if the UE has reached the minimum transmit power, the negative power control commands are no longer accumulated. In addition, the UE will reset the power offset value under any of the following five triggering conditions, g (i) =0 for PUCCH and f (i) =0 for PUSCH: 1) when an absolute power control instruction for the PUSCH is received; 2) upon receipt of the Po _ UE; 3) when receiving a random access response message; 4) when the cell is switched; 5) when entering/leaving the RRC active state.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

In the following embodiments of the present invention, the UE is in dual connectivity, that is, the UE is connected to at least two base stations, and the UE only has single-chain transmission capability.

Referring to fig. 3, a schematic diagram of a first embodiment of a method for controlling uplink transmit power of a UE according to the present invention includes:

step 301: the method comprises the steps that UE determines subframe configuration information, wherein the subframe configuration information is used for indicating a base station corresponding to each subframe in a wireless frame; the UE determines static power control parameters corresponding to each base station;

step 302: the UE determines a TPC adjustment value of a current subframe;

step 303: and the UE determines the uplink transmitting power of the current subframe according to the static power control parameter corresponding to the base station corresponding to the current subframe and the TPC adjusting value of the current subframe.

In this embodiment, the UE determines subframe configuration information, where the subframe configuration information is used to indicate a base station corresponding to each subframe in a radio frame, and determines a static power control parameter corresponding to each base station; determining a TPC adjustment value of a current subframe; and determining the uplink transmitting power of the current subframe according to the static power control parameter corresponding to the base station corresponding to the current subframe and the TPC adjusting value of the current subframe, thereby realizing the control of the uplink transmitting power of the UE under the condition that the UE is connected to at least two base stations.

Referring to fig. 4, a schematic diagram of a second embodiment of the method for controlling uplink transmit power of a UE of the present invention includes:

step 401: the method comprises the steps that UE determines subframe configuration information, wherein the subframe configuration information is used for indicating a base station corresponding to each subframe in a wireless frame;

the subframe configuration information may be sent to the UE by a base station to which the UE is connected, for example, the UE is connected to the macro base station and the micro base station respectively, and the subframe configuration information may be sent to the UE by the macro base station or the micro base station, which is not limited herein.

And according to the base station corresponding to each subframe, the UE sends uplink data to the base station corresponding to the subframe in each subframe. Taking fig. 2 as an example, in subframe No. 0 of each radio frame, the UE sends uplink data to the micro base station corresponding to subframe No. 0, and in subframe No. 3 of each radio frame, the UE sends uplink data to the macro base station corresponding to subframe No. 3.

Step 402: and the UE determines the static power control parameters corresponding to each base station.

The static power control parameters corresponding to the base stations may be the same or different. The static power control parameter may be directly preset in the UE, or may be indicated to the UE by the base station. If the static power control parameter is indicated to the UE by the base station, the static power control parameter may be indicated to the UE by the macro base station and/or the micro base station.

For example, assume that a UE is simultaneously connected to macro base station a and micro base station B; then, the static power control parameter may be indicated to the UE by the macro base station a or the micro base station B, or may be indicated to the UE by the macro base station a and the micro base station B, respectively.

Step 403: for each subframe, the UE determines a TPC adjustment value of the subframe;

wherein the TPC adjustment value may be: TPC cumulative value or TPC absolute value.

The TPC adjustment value for each subframe may be dynamically indicated to the UE by a base station connected to the UE. Specifically, the TPC adjustment value of the subframe may be indicated to the UE by the base station corresponding to the subframe.

Step 404: for each subframe, the UE determines a power offset value of the current subframe according to the TPC adjustment value of the current subframe.

In a first possible implementation manner, the TPC adjustment value is a TPC cumulative value; the determining, by the UE, the power offset value of the current subframe according to the TPC adjustment value of the current subframe may include:

and the UE determines the power offset value of the current subframe according to the power offset value of the subframe before the current subframe and the TPC accumulated value of the current subframe.

Specifically, the power offset value of the current subframe = the power offset value of the subframe preceding the current subframe + the TPC accumulated value of the current subframe.

When the current subframe corresponds to a different base station from the subframe preceding the current subframe, such as subframe 3, subframe 6, subframe 8, etc. in fig. 2, and one subframe in the current subframe and the subframe preceding the current subframe corresponds to a macro base station and one subframe corresponds to a micro base station, the difference between the transmission powers of the UEs in the two subframes is large, and therefore, the adjustment range of the transmission power of the current subframe should be large; when the current subframe corresponds to the same base station as the subframe preceding the current subframe, for example, subframes 1, 2, 4, 5, 7, and 9 in fig. 2, the two subframes correspond to the same base station, and the difference of the transmission power of the UE is small, so the adjustment range of the transmission power of the current subframe should be small; therefore, assuming that the value range of the TPC cumulative value of the current subframe is M1 when the current subframe corresponds to a different base station from the subframe immediately preceding the current subframe, and the value range of the TPC cumulative value of the current subframe when the current subframe corresponds to the same base station as the subframe immediately preceding the current subframe is M2, M1 is greater than M2.

In a second possible implementation manner, the TPC adjustment value is a TPC cumulative value; the UE determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe may include:

when the UE determines that the current subframe and the previous subframe of the current subframe correspond to different base stations, the power offset value of the current subframe is determined according to the power offset value of the previous subframe of the current subframe, the TPC accumulated value of the current subframe and a preset first static adjustment value; and when the UE determines that the current subframe corresponds to the same base station as the subframe before the current subframe, determining the power offset value of the current subframe according to the power offset value of the subframe before the current subframe and the TPC accumulated value of the current subframe.

Specifically, when the current subframe corresponds to a different base station from a subframe preceding the current subframe, the power offset value of the current subframe = the power offset value of the subframe preceding the current subframe + the TPC cumulative value of the current subframe + the first static adjustment value;

and when the current subframe corresponds to the same base station as the subframe before the current subframe, the power offset value of the current subframe = the power offset value of the subframe before the current subframe + the TPC accumulated value of the current subframe.

In a third possible implementation manner, the TPC adjustment value is a TPC cumulative value; the UE determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe may include:

when the current subframe corresponds to a different base station from the subframe before the current subframe, the UE determines the power offset value of the current subframe according to the power offset value of the subframe of the same base station corresponding to the subframe before the current subframe and the TPC accumulated value of the current subframe;

when the current subframe corresponds to the same base station as the previous subframe of the current subframe, the UE determines the power offset value of the current subframe according to the power offset value of the previous subframe of the current subframe and the TPC accumulated value of the current subframe;

In a fourth possible implementation manner, the TPC adjustment value is a TPC cumulative value; the UE determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe may include:

when the current subframe corresponds to a different base station from the subframe before the current subframe, the UE determines the power offset value of the current subframe according to the power offset value of the subframe which corresponds to the same base station from the subframe before the current subframe and the current subframe, the TPC accumulated value of the current subframe and a preset second static adjustment value;

and when the current subframe corresponds to the same base station as the subframe before the current subframe, the UE determines the power offset value of the current subframe according to the power offset value of the subframe before the current subframe and the TPC accumulated value of the current subframe.

In a fifth possible implementation manner, the TPC adjustment value is a TPC cumulative value; the UE determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe may include:

when the current subframe and the previous subframe of the current subframe correspond to different base stations, the UE determines the TPC accumulated value of the current subframe as the power offset value of the current subframe;

In a sixth possible implementation manner, the TPC adjustment value is a TPC absolute value; the UE determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe may include:

the UE determines the TPC absolute value of the current subframe as the power offset value of the current subframe.

In a seventh possible implementation manner, when a current subframe corresponds to a different base station from a subframe preceding the current subframe, the TPC adjustment value is a TPC absolute value; when the current subframe corresponds to the same base station as the previous subframe of the current subframe, the TPC adjustment value is a TPC accumulated value; the UE determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe may include:

when the current subframe and the previous subframe of the current subframe correspond to different base stations, the UE determines the TPC absolute value of the current subframe as the power deviation value of the current subframe;

when the current subframe corresponds to the same base station as the previous subframe of the current subframe and the TPC adjustment value of the previous subframe of the current subframe is the TPC absolute value, the UE determines the TPC accumulated value of the current subframe as the power deviation value of the current subframe;

and when the current subframe corresponds to the same base station as the previous subframe of the current subframe and the TPC adjustment value of the previous subframe of the current subframe is the TPC accumulated value, the UE determines the power offset value of the current subframe according to the power offset value of the previous subframe of the current subframe and the TPC accumulated value of the current subframe.

Step 405: and the UE determines the uplink transmitting power of the current subframe according to the static power control parameter corresponding to the base station corresponding to the current subframe and the power offset value of the current subframe.

The uplink transmission power control formula of the PUCCH is shown in formula 1.

The transmit power control formula of PUSCH is referred to as formula 2 and formula 3.

In the embodiment, the UE determines a power offset value of the current subframe according to the TPC adjustment value of the current subframe, and determines uplink transmission power of the current subframe according to a static power control parameter corresponding to the base station corresponding to the current subframe and the power offset value of the current subframe; therefore, under the condition that the UE is connected to at least two base stations, the transmission power control under the condition of UE double connection is realized.

Referring to fig. 5, a schematic diagram of a third embodiment of a method for controlling uplink transmit power of a UE according to an embodiment of the present invention is shown, where the method includes:

step 501: a base station sends subframe configuration information to UE, wherein the subframe configuration information is used for indicating the base station corresponding to each subframe in a wireless frame;

wherein, the base station in the embodiment of the present invention is any one of the at least two base stations to which the UE is connected.

Step 502: the base station sends the static power control parameters of the base station to the UE;

optionally, the base station may also send the static power control parameters of other base stations to which the UE is connected to the UE.

Step 503: the base station sends a Transmit Power Control (TPC) adjustment value of a current subframe to the UE so that the UE can determine the uplink transmit power of the current subframe according to the static power control parameter and the TPC adjustment value; the current subframe is a subframe corresponding to the base station in subframes of the UE.

For how the UE determines the uplink transmit power of the subframe according to the TPC adjustment value of the subframe, refer to the related description in the embodiments shown in fig. 3 and fig. 4, which is not repeated herein.

In this embodiment, a base station sends subframe configuration information to a UE, sends a static power control parameter of the base station to the UE, and sends a transmit power control TPC adjustment value of a current subframe to the UE, so that the UE determines uplink transmit power of the current subframe according to the static power control parameter and the TPC adjustment value, thereby realizing control of uplink transmit power in the UE when the UE is connected to at least two base stations.

Corresponding to the above method, an embodiment of the present invention further provides a device for controlling uplink transmit power of a UE, and referring to fig. 6, the device 600 includes:

an information determining unit 610, configured to determine subframe configuration information, where the subframe configuration information is used to indicate a base station corresponding to each subframe in a radio frame;

a first determining unit 620, configured to determine static power control parameters corresponding to each base station;

a second determining unit 630, configured to determine a TPC adjustment value of the current subframe;

a third determining unit 640, configured to determine, according to the subframe configuration information determined by the information determining unit 610 and the static power control parameter corresponding to each base station determined by the first determining unit 620, a static power control parameter corresponding to the base station corresponding to the current subframe, and determine, according to the static power control parameter corresponding to the base station corresponding to the current subframe and the TPC adjustment value of the current subframe determined by the second determining unit 630, the uplink transmit power of the current subframe.

Preferably, the third determining unit 640 may include:

a second determining subunit, configured to determine, according to the subframe configuration information determined by the information determining unit 610 and the static power control parameter corresponding to each base station determined by the first determining unit, a static power control parameter corresponding to the base station corresponding to the current subframe, and determine, according to the static power control parameter corresponding to the base station corresponding to the current subframe and the power offset value of the current subframe, the uplink transmit power of the current subframe.

In a first possible implementation manner, the TPC adjustment value is a TPC cumulative value; the first determining subunit may be specifically configured to:

In a second possible implementation manner, the TPC adjustment value is a TPC cumulative value; the first determining subunit may be specifically configured to:

In a third possible implementation manner, the TPC adjustment value is a TPC cumulative value; the first determining subunit may be specifically configured to:

In a fourth possible implementation manner, the TPC adjustment value is a TPC cumulative value; the first determining subunit may be specifically configured to:

In a fifth possible implementation manner, the TPC adjustment value is a TPC cumulative value; the first determining subunit may be specifically configured to:

In a sixth possible implementation manner, the TPC adjustment value is a TPC absolute value; the first determining subunit may be specifically configured to:

In a seventh possible implementation manner, when a current subframe corresponds to a different base station from a subframe preceding the current subframe, the TPC adjustment value is a TPC absolute value; when the current subframe corresponds to the same base station as the previous subframe of the current subframe, the TPC adjustment value is a TPC accumulated value; the first determining subunit may be specifically configured to:

Preferably, the static power control parameters corresponding to different base stations are the same or different.

In this embodiment, subframe configuration information is determined, where the subframe configuration information is used to indicate a base station corresponding to each subframe in a radio frame; determining static power control parameters corresponding to each base station; determining a TPC adjustment value of a current subframe; and determining the uplink transmitting power of the current subframe according to the static power control parameter corresponding to the base station corresponding to the current subframe and the TPC adjusting value of the current subframe. Therefore, the uplink transmitting power of the UE in each subframe can be determined, and each subframe corresponds to different base stations, so that the control of the uplink transmitting power required when the UE sends data to different base stations is realized under the condition that the UE is connected to at least two base stations.

Referring to fig. 7, another structure diagram of an uplink transmit power control apparatus according to an embodiment of the present invention is shown, where the apparatus may be disposed in a base station, and the apparatus 700 includes:

a sending unit 710, configured to send subframe configuration information to a UE, where the subframe configuration information is used to indicate a base station corresponding to each subframe in a radio frame; sending static power control parameters of a base station to the UE; the base station is one of the at least two base stations; the UE is also used for sending a Transmit Power Control (TPC) adjustment value of the current subframe to the UE so that the UE can determine the uplink transmit power of the current subframe according to the static power control parameter and the TPC adjustment value; the current subframe is a subframe corresponding to the base station in subframes of the UE.

Optionally, the sending unit 710 may be further configured to: and sending the static power control parameters of other base stations connected with the UE except the base station to the UE.

In this embodiment, a base station sends subframe configuration information to a UE, sends a static power control parameter of the base station to the UE, and sends a TPC adjustment value of transmission power control of a current subframe to the UE, so that the UE determines uplink transmission power of the current subframe according to the static power control parameter and the TPC adjustment value, thereby realizing control of uplink transmission power of the UE when the UE is connected to at least two base stations.

Referring to fig. 8, which is a schematic diagram of a UE structure provided in the embodiment of the present invention, a UE800 includes: a processor 810, a memory 820, a transceiver 830, and a bus 840;

the processor 810, the memory 820, and the transceiver 830 are connected to each other by a bus 840; bus 840 may be an ISA bus, PCI bus, EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 8, but this is not intended to represent only one bus or type of bus.

And a memory 820 for storing programs. In particular, the program may include program code comprising computer operating instructions. Memory 820 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.

The transceiver 830 is used to connect and communicate with other devices.

The processor 810 executes the program code to determine subframe configuration information, where the subframe configuration information is used to indicate a base station corresponding to each subframe in a radio frame; determining static power control parameters corresponding to each base station; determining a TPC adjustment value of a current subframe; and determining the uplink transmitting power of the current subframe according to the static power control parameter corresponding to the base station corresponding to the current subframe and the TPC adjusting value of the current subframe.

Preferably, the processor 810 is specifically configured to:

In a first possible implementation manner, the TPC adjustment value is a TPC cumulative value; the processor 810 may be specifically configured to:

In a second possible implementation manner, the TPC adjustment value is a TPC cumulative value; the processor 810 may be specifically configured to:

In a third possible implementation manner, the TPC adjustment value is a TPC cumulative value; the processor 810 may be specifically configured to:

In a fourth possible implementation manner, the TPC adjustment value is a TPC cumulative value; the processor 810 may be specifically configured to:

In a fifth possible implementation manner, the TPC adjustment value is a TPC cumulative value; the processor 810 may be specifically configured to:

In a sixth possible implementation manner, the TPC adjustment value is a TPC absolute value; the processor 810 may be specifically configured to:

In a seventh possible implementation manner, when a current subframe corresponds to a different base station from a subframe preceding the current subframe, the TPC adjustment value is a TPC absolute value; when the current subframe corresponds to the same base station as the previous subframe of the current subframe, the TPC adjustment value is a TPC accumulated value; the processor 810 may be specifically configured to:

In this embodiment, subframe configuration information is determined, where the subframe configuration information is used to indicate a base station corresponding to each subframe in a radio frame; determining static power control parameters corresponding to each base station; determining a TPC adjustment value of a current subframe; and determining the uplink transmitting power of the current subframe according to the static power control parameter corresponding to the base station corresponding to the current subframe and the TPC adjusting value of the current subframe. Therefore, the uplink transmitting power of the UE in each subframe can be determined, each subframe corresponds to different base stations, and the control of the transmitting power required when the UE sends data to different base stations is realized under the condition that the UE is connected to at least two base stations.

Referring to fig. 9, which is a schematic diagram of a base station structure provided in the embodiment of the present invention, a base station 900 includes: a processor 910, a memory 920, a transceiver 930, and a bus 940;

the processor 910, the memory 920, and the transceiver 930 are connected to each other by a bus 940; the bus 940 may be an ISA bus, PCI bus, EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 9, but this does not indicate only one bus or one type of bus.

And a memory 920 for storing programs. In particular, the program may include program code comprising computer operating instructions. Memory 920 may include high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.

The processor 910 executes the program code.

The transceiver 930 is configured to connect to other devices and communicate with other devices, and the transceiver 930 is configured to send subframe configuration information to the UE, where the subframe configuration information is used to indicate a base station corresponding to each subframe in a radio frame; sending static power control parameters of a base station to the UE; the UE is also used for sending a Transmit Power Control (TPC) adjustment value of the current subframe to the UE so that the UE can determine the uplink transmit power of the current subframe according to the static power control parameter and the TPC adjustment value; the current subframe is a subframe corresponding to the base station in subframes of the UE.

Optionally, the transceiver 930 may be further configured to: and sending the static power control parameters of other base stations connected with the UE except the base station to the UE.

Those skilled in the art will readily appreciate that the techniques of the embodiments of the present invention may be implemented as software plus a required general purpose hardware platform. Based on such understanding, the technical solutions in the embodiments of the present invention may be essentially or partially implemented in the form of a software product, which may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments or some parts of the embodiments.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above-described embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for controlling uplink transmission power of User Equipment (UE) is characterized in that the UE is connected to at least two base stations; the method further comprises the following steps:

2. The method of claim 1, wherein determining the uplink transmit power of the current subframe according to the static power control parameter corresponding to the base station corresponding to the current subframe and the TPC adjustment value of the current subframe comprises:

3. The method of claim 2, wherein the TPC adjustment value is a TPC accumulation value; determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe includes:

4. The method of claim 2, wherein the TPC adjustment value is a TPC accumulation value; determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe includes:

5. The method of claim 2, wherein the TPC adjustment value is a TPC accumulation value; determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe includes:

6. The method of claim 2, wherein the TPC adjustment value is a TPC accumulation value; determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe includes:

7. The method of claim 2, wherein the TPC adjustment value is a TPC accumulation value; determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe includes:

8. The method of claim 2, wherein the TPC adjustment value is a TPC absolute value; determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe includes:

9. The method of claim 2, wherein the TPC adjustment value is a TPC absolute value when a current subframe corresponds to a different base station than a subframe previous to the current subframe; when the current subframe corresponds to the same base station as the previous subframe of the current subframe, the TPC adjustment value is a TPC accumulated value; determining the power offset value of the current subframe according to the TPC adjustment value of the current subframe includes:

10. The method according to any of claims 1 to 9, wherein the static power control parameters for different base stations are the same or different.

11. An uplink transmission power control device of User Equipment (UE), wherein the UE is connected to at least two base stations; the device also includes:

12. The apparatus according to claim 11, wherein the third determining unit comprises:

13. The apparatus of claim 12, wherein the TPC adjustment value is a TPC accumulation value; the first determining subunit is specifically configured to:

14. The apparatus of claim 12, wherein the TPC adjustment value is a TPC accumulation value; the first determining subunit is specifically configured to:

15. The apparatus of claim 12, wherein the TPC adjustment value is a TPC accumulation value; the first determining subunit is specifically configured to:

16. The apparatus of claim 12, wherein the TPC adjustment value is a TPC accumulation value; the first determining subunit is specifically configured to:

17. The apparatus of claim 12, wherein the TPC adjustment value is a TPC accumulation value; the first determining subunit is specifically configured to:

18. The apparatus of claim 12, wherein the TPC adjustment value is a TPC absolute value; the first determining subunit is specifically configured to:

19. The apparatus of claim 12, wherein the TPC adjustment value is a TPC absolute value when a current subframe corresponds to a different base station than a subframe previous to the current subframe; when the current subframe corresponds to the same base station as the previous subframe of the current subframe, the TPC adjustment value is a TPC accumulated value; the first determining subunit is specifically configured to:

20. The apparatus according to any of claims 11 to 19, wherein the static power control parameters for different base stations are the same or different.

21. A user equipment, UE, wherein the UE is connected to at least two base stations; the UE includes:

22. The UE of claim 21, wherein the processor is further configured to: determining a power offset value of the current subframe according to the TPC adjustment value of the current subframe; and determining the uplink transmitting power of the current subframe according to the static power control parameter corresponding to the base station corresponding to the current subframe and the power offset value of the current subframe.

23. The UE of claim 22, wherein the TPC adjustment value is a TPC accumulation value; the processor is specifically configured to:

24. The UE of claim 22, wherein the TPC adjustment value is a TPC accumulation value; the processor is specifically configured to:

25. The UE of claim 22, wherein the TPC adjustment value is a TPC accumulation value; the processor is specifically configured to:

26. The UE of claim 22, wherein the TPC adjustment value is a TPC accumulation value; the processor is specifically configured to:

27. The UE of claim 22, wherein the TPC adjustment value is a TPC accumulation value; the processor is specifically configured to:

28. The UE of claim 22, wherein the TPC adjustment value is a TPC absolute value; the processor is specifically configured to:

29. The UE of claim 22, wherein the TPC adjustment value is a TPC absolute value when a current subframe corresponds to a different base station than a subframe preceding the current subframe; when the current subframe corresponds to the same base station as the previous subframe of the current subframe, the TPC adjustment value is a TPC accumulated value; the processor is specifically configured to:

30. A method for controlling uplink transmission power of User Equipment (UE), wherein the UE is connected to at least two base stations, the method further comprising:

31. The method of claim 30, further comprising:

32. An uplink transmission power control device of User Equipment (UE), wherein the UE is connected to at least two base stations; the device includes:

33. The apparatus of claim 32, wherein the sending unit is further configured to: and sending the static power control parameters of other base stations connected with the UE except the base station to the UE.

34. A base station, comprising:

35. The base station of claim 34, wherein the transceiver is further configured to: and sending the static power control parameters of other base stations connected with the UE except the base station to the UE.